/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.kie.kogito.process;

/**
 * Thrown when there is any kind of variable violation such as missing required variable
 * or attempt to set already defined readonly variable.
 * 
 */
public class VariableViolationException extends RuntimeException {

    private static final long serialVersionUID = 8031225233775014572L;

    private final String processInstanceId;
    private final String variableName;
    private final String errorMessage;

    public VariableViolationException(String processInstanceId, String variableName, String errorMessage) {
        super("Variable '" + variableName + "' in process instance '" + (processInstanceId == null ? "unknown" : processInstanceId) + "' violated");
        this.processInstanceId = processInstanceId;
        this.variableName = variableName;
        this.errorMessage = errorMessage;
    }

    /**
     * Returns process instance id of the instance that failed.
     * 
     * @return process instance id
     */
    public String getProcessInstanceId() {
        return processInstanceId;
    }

    /**
     * Returns variable name that was violated
     * 
     * @return variable name
     */
    public String getVariableName() {
        return variableName;
    }

    /**
     * Returns error message associated with this failure.
     * 
     * @return error message
     */
    public String getErrorMessage() {
        return errorMessage;
    }

}
